{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "669163",
    "entityType": "User",
    "nonce": "0x8380c5894937eee94a6c4af0a8a28bae5115b20d427662ea3de0388a3eb19636",
    "signature": "0x25e039cf6bbdbf4fd33e06930bda30f6f29bb863eb29f4687ce198d47a1582e055fbd5ef62bf9aa689fb2cd8aeb23dc3ce22f2aa653e6624c2ba9c0b26ccca0f1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}